fix: downloader check blocking issue while startup 修复下载器检查逻辑阻塞程序启动问题 #892
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Fixes #891.
这个 PR 尝试在
start
阶段只进行一次检查,如果下载器未就绪,则抛出一个警告,而非阻塞程序启动。若下载功能调用 qb 失败,则异常会由那些下载逻辑来处理(也应当如此,因为初始检查是不可靠的,qb 作为外部服务随时可能在后续生命周期发生断连或不可用)。